Automatic speed-change apparatus for a gear transmission

摘要

The object is to provide a compact speed-change apparatus for performing the automatic gear shifting of the conventional gear transmission. In this apparatus the select mechanism comprises a select motor 2 rotatable forward and backward, gears 4, 6 for transmitting the rotation of the select motor 2, and a select-shift sleeve 7 receiving the rotation and one end of which is connected with a select-shift rod 9 of the gear transmission; and the shift mechanism comprises a shift motor 10, a gear 12 to be rotated by the shift motor 10, a swing gear 13 meshing with the gear 12 and swinging on an intermediate shaft 14 as a fulcrum, and a connecting rod 16 one end of which is connected with the swing gear 13 and the other end of which is connected with said select-shift sleeve 7.